Method of finishing the surface of a floating type magnetic head

Details Method of finishing the surface of a floating type magnetic head Method of finishing the surface of a floating type magnetic head

1997-07-07

1998-11-10

Gorgos, Kathryn L.

Etching a substrate: processes

Forming or treating article containing magnetically...

216 96, 216 97, 216103, 216108, G11B 5187, G11B 560

Patent

active

058338713

ABSTRACT:
In a method of finishing a surface of a floating type magnetic head in which a sliding contact surface opposing a magnetic recording medium is made of a polycrystal material comprising at least two kinds of phases of different compositions mixed together, the sliding contact surface is roughened by treatment with an etching solution in accordance with a chemical etching process. The sliding contact surface of the floating type magnetic head can be mirror-finished with an appropriate surface roughness, so that satisfactory CSS performance and good electromagnetic performance can be obtained. The sliding contact surface is preferably made of a polycrystal ceramic material selected from the CaTiO.sub.3 ceramic system, the AlTiC ceramic system and the MnO-NiO ceramic system. The etching solution contains aqueous hydrogen peroxide as an oxidizing agent and is preferably an aqueous hydrogen peroxide and ammonia solution.

REFERENCES:
patent: 4322264 (1982-03-01), Rioult et al.
patent: 4985306 (1991-01-01), Morizane et al.
patent: 5079657 (1992-01-01), Aronoff et al.
patent: 5303100 (1994-04-01), Nakayama et al.
patent: 5468343 (1995-11-01), Kitano

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